I have only very respect after seeing some burned lipos (on youtube). They tried to kill them, but after the smartphone battery issues with samsung, I try to keep at least my quadcopter lipos in the basement.
And I got one copter killed by a shortage after a crash (burned down a connector) and I had to run stopping the fire!
If super caps are inpractical, then I opt in for a NiMH or two. They are not as dangerous in my mind as lipos 